Wash hands and countertops with soap and warm water before handling produce.
Remove the outer leaves of lettuce, cabbage or any leafy vegetable and discard.
Place the vegetable or fruit in the colander and hold under running water for several seconds.
While under the running water, run the fruit or vegetable with your hands or a scrubbing brush for vegetables with tougher surfaces such as potatoes and carrots.
Wash lettuce leaves individually. Grapes can be washed more efficiently if removed from the stems.